I thought I had a vertigo the last few days, as my symptoms were similar to my brother's (he gets it on occasion), but I think it was just an inner ear infection. I had that feeling like I was going to get sick with a cold, but never did, and I felt for a good 36 hours like I was on the verge of getting dizzy, but also never did. And I didn't have a headache, but felt slightly off center. It seems to have cleared up, but was a strange feeling.